Hazy skies from fires are reminiscent of 2023 when Chicago was the second-most-polluted major city in the country.

As wildfires continue to rage in western Canada, the Environmental Protection Agency issued its first alert of the year for ...

An air quality alert is in effect until midnight Thursday for the Chicago area as Canadian wildfires continue.

Another large fire exacerbated by climate change is threatening the health of Chicagoans. Government officials issued an air ...

Chicago’s air took a hit overnight as smoke from more than 100 Canadian wildfires drifted into the city, pushing the air ...

Toxic air spreads hundreds or even thousands of miles from where wildfires burn. Last week, Chicago felt the sting—and ...

Wildfires are still raging in Canada, where there have been dozens of active fires, and over 33,000 people have been forced ...

Smoke from Canadian wildfires triggered an air quality alert Thursday across northeast Illinois, meaning conditions are ...

Smoke coming in from Canadian wildfires settled over Chicago, causing unhealthy air quality conditions for at-risk groups.

Smoke from Canadian wildfires continues to plague the Upper Midwest and Great Lakes region, with multiple states under air ...

Smoke from wildfires still raging in Canada is degrading air quality across the northern U.S., turning skies a murky orange ...